4e77b831a488f99fbe9720fdcf6c562298ac83c51c8f80e7e25f8cd780af6f5a

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25-03-2024 16:28

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General

Target

2024-03-25_2eb70e8351d1afa53505c0e76bba5449_cryptolocker.exe
Size

74KB
MD5

2eb70e8351d1afa53505c0e76bba5449
SHA1

7693fb0af9fd9ac634bcd576802642cc9de99cce
SHA256

4e77b831a488f99fbe9720fdcf6c562298ac83c51c8f80e7e25f8cd780af6f5a
SHA512

06f3c5c357e131674d7df1c1a6c181b5d16477e7459362224bff6c3b7dcc071d4e3d315ef7db7f6eb4d73bdc21ab71866935bdd82062572e0548283c519e5a5c
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1Ux:X6a+SOtEvwDpjBZYvQd2W

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001223a-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001223a-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3024	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2128	2024-03-25_2eb70e8351d1afa53505c0e76bba5449_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 3024	2128	2024-03-25_2eb70e8351d1afa53505c0e76bba5449_cryptolocker.exe	28
PID 2128 wrote to memory of 3024	2128	2024-03-25_2eb70e8351d1afa53505c0e76bba5449_cryptolocker.exe	28
PID 2128 wrote to memory of 3024	2128	2024-03-25_2eb70e8351d1afa53505c0e76bba5449_cryptolocker.exe	28
PID 2128 wrote to memory of 3024	2128	2024-03-25_2eb70e8351d1afa53505c0e76bba5449_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-25_2eb70e8351d1afa53505c0e76bba5449_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_2eb70e8351d1afa53505c0e76bba5449_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3024

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
74KB

MD5
4fcf990334a356a3b9165ef884a29c72

SHA1
c337a523b8153e49afd5e31a3afdf716d3cd34b0

SHA256
59d28906adfca2e1f41fe349b45a213c19e083e6f05400cf53d579cbfdb1af0a

SHA512
c52993585bc30606a44500dedcfc05abe533ed3bde66480e4d9af682021446f75e34ed62cfb285817736d5efaef6d01da689f865e3bc9817059e74667cf0b0bc

Download Submit
memory/2128-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2128-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2128-1-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/3024-15-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download